On Tuesday, the Centers for Disease Control and Prevention announced that it was reversing its previous mask guidance which said that vaccinated people no longer needed to wear face coverings. Due to the hypercontagious Delta variant, the agency is now recommending that all Americans regardless of vaccination status mask up in some public places. Yahoo News Medical Contributor Dr. Kavita Patel explains what you need to know about the new mask guidance and how you can best protect yourself and loved ones.
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